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This guide focuses on the AWS SDK for PHP client for Amazon CloudHSM. This guide assumes that
you have already downloaded and installed the AWS SDK for PHP. See Installation for more information on
getting started.

The easiest way to get up and running quickly is to use the Aws\CloudHsm\CloudHsmClient::factory() method
and provide your credential profile (via the profile option), which identifies the set of credentials you want to
use from your ~/.aws/credentials file (see Using the AWS credentials file and credential profiles).

A region parameter is required. You can find a list of available regions
using the Regions and Endpoints
reference.

You can provide your credential profile like in the preceding example, specify your access keys directly (via key
and secret), or you can choose to omit any credential information if you are using AWS Identity and Access
Management (IAM) roles for EC2 instances
or credentials sourced from the AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY environment variables.

Note

The profile option and AWS credential file support is only available for version 2.6.1 of the SDK and higher.
We recommend that all users update their copies of the SDK to take advantage of this feature, which is a safer way
to specify credentials than explicitly providing key and secret.

A more robust way to connect to Amazon CloudHSM is through the service builder. This allows you to specify
credentials and other configuration settings in a configuration file. These settings can then be shared across all
clients so that you only have to specify your settings once.

useAws\Common\Aws;// Create a service builder using a configuration file$aws=Aws::factory('/path/to/my_config.json');// Get the client from the builder by namespace$client=$aws->get('CloudHsm');